Hello,
Thank you for your query at DoctorSpring.com
I understand your concern.
Are both of your arms swollen? Where is the swelling exactly?
Since when did this pain and darkening symptoms start? What medications are you on? And what was your BP during the last checkup?
Did you get your CBC evaluated recently? Your symptoms are non-specific to any particular condition, hence, it would be better if we have a detailed analysis. I will advise CBC, FBS/PPBS, ESR, CRP, LFT, RFT, Serum Electrolytes, and Urine Routine besides a latest ECG.
Kindly revert back with more information,
Regards.